Sheet-metal wheel.



Patented Nov. I9, |901.

J. MACPHAIL.

SHEET METAL WHEEL.

(Application 'led Apr. 27; 1901.)

(No Model.)

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UNTTED STATES .IAMES MACPHAIL, OF BLUE ISLAND,

PATENT OFFICE.

ILLINOIS, ASSIGNOR TO MCCORMICK TION OF ILLINOIS.

SHEET-METAL WHEEL.

SPECIFICATION fOI'IIlng part Ol Letters Patent No. 686,822, datedNovember 19, 1901. Application filed April 27, 1901- Serial No. 57,689.(No model.)

To @ZZ whom it may concern:

Be it known that I, JAMES MACPHAIL, a citizen of the United States,residing at Blue Island, in the county of Cook and State of Illinois,have invented a new and useful Sheet- Metal Wheel, of which thefollowing is a specification.

This invention relates to sheet metal wheels.

The object of the invention is to provide a Wheel of sheet metal whichis strong, simple in construction, durable, and economical inmanufacture.

Theinvention consists, substantia1ly,in the construction, combination,location, and arrangement, all as Will be more fully hereinafter setforth7 as shown in the accompanying drawings, and finally pointed out inthe appended claims. v

Referring to the accompanying drawings, and to the various views andreference-signs appearing thereon, Figure l is an edge view, partly intransverse section, of a wheel embodying the principles of my invention.Fig. 2 is a side elevation thereof, parts broken off. Figs. 3 and 4 aremodified forms embraced within the spirit and scope of my invention.

The same part is designated by the same reference-sign wherever itoccurs throughout the several views.

In carrying out my invention I form the wheel of sheet-metal plates ordisks having laterally-extending peripheral flanges which are formedinto screw-thread shape,whe'reby the one may be screwed upon theother,thereby locking said flanges together, said flanges forming thetread portion of the wheel. In this manner an exceedingly light,durable, efficient, and economical wheel is produced.

Referring to the accompanying drawings, reference-sign A designates ashaft or axle, upon which is mounted a hub B, which may be of anysuitable construction. Mounted upon the hub B are metallic sheets ordisks C D. Each disk at its outer periphery is provided with lateralflanges, which flanges project in opposite directions with respect toeach other, and in each of which is formed spiral or screw threads,thereby enabling the one flange to be screwed upon the other, wherebysaid flanges are locked together and maintained in eicient lockingrelation to form the tread of the wheel. This interlocking of the[langes by spiral or screw threads may be i Y A eected in many differentWays. For iustance, as shown in' Fig. l, the sheet or plate C isprovided with a flange E, which is first bent outwardly and thenreversely bent upon itself to form a laterally-extending flange F.Similarly the plate or disk D is provided with alaterally-extendingflange G, which is first bent outwardly and then reversely folded backupon itself to form the flange II, portions E and G of said flangeextending in opposite directions with respect to each other, and each isformed into or with meshing spiral screw-threads, whereby one of saidflanges may be screwed upon the other. The screw-threads or spirals maybe of any suitable orconvenient transverse sectional shape. Forinstance, as shown in Figs. l and 3, a curved contour of thread isshown, whereas in the form in Fig. 4 the screw-threads or spirals aremore V-shaped in cross-section. Instead of first bending the flanges onthe disks or plates outwardly and then reversely bending or folding suchportions back upon themselves to form the flanges F and H the feature ofthe flanges F II may be omitted, as shown in Figs. 3 and 4, and theflange E of Fig. 8 or E2 of Fig. t may be at once bent inwardly towardthe disk or plate D D2, and similarly the flange G of Fig. 3 or Gr2 ofFig. 4 may be bent at once inwardly toward sheet or disk C' C2, theflanges G G2 extending in opposite directions with respect to theflanges E E2, said flanges being formed with intermeshing spirals orscrew-threads, as above explained, whereby said flanges may be screwedthe one upon the other, as clearly shown, to form the tread of thewheel. In practice and in any case the distance between the outer orperipheral portions of the sheets or disks C D should be less than thedistance apart of said disks at their central portions, as clearly shownand indicated in the drawings. In this manner a lateral strain ortension is imposed upon said sheets or disks, which prevents unduevibration thereof and gives strength and rigidity to the tread portionsof the wheel.

A Wheel constructed in accordance with the IOO principles abovedescribed maybe used in any relation and for any purpose for whichwheels are adapted, and I do not desire to be limited in respect of theuse thereof. I have found, however, that such construction isparticularly eflicient for traction-wheels for traction-engines,agricultural machines, and the like.

Having now set forth the object and nature of my invention and aconstruction embodying the principles thereof, what I claim as new anduseful and of my own invention, and desire to secure by Letters Patent,is-

1. A wheel composed of sheet-metal plates or disks havinglaterally-extending anges, said flanges formed with spirals or screwthreads, whereby the one vmay be screwed upon the other, as and for thepurpose set forth.

2. A wheel composed of sheet-metal plates or disks having lateraloppositely-extending screw-thread iianges, whereby the one may bescrewed upon the other to form the tread of the wheel, as and for thepurpose set forth.

3. A wheel composed of sheet-metal plates or disks havingoppositely-extending screwthreaded peripheral flanges adapted to bescrewed the one upon the other to form the tread of the wheel, thedistance between said sheets or disks at the peripheries thereof beingless than the distance between said sheets or disks at the centersthereof, as and for the purpose set forth.

4. A wheel composed of sheet-metal plates or disks, each plate or diskat the outer periphery thereof being heut outwardly and then folded orbent back upon itself and. inwardly or toward each other to formlaterally-extendin g iianges, the inwardly-bent por- -tions being formedinto meshing screwthreads whereby the one may be screwed upon the otherto form the tread of the wheel, as and for the purpose set forth.

In witness whereof I have hereunto set my hand, this 24th day of April,1901, in the presence of the subscribing witnesses.

JAMES MACPHAIL.

Witnesses:

E. C. SEMPLE, S. E. DARBY.

